VIDEO: Selena Gomez Does Silent Interview on Lopez Tonight!

Disney teen star Selena Gomez, who has been busy promoting Ramona and Beezus, has worn her voice out.

She has canceled appearances at state fairs in Delaware and Ohio on Wednesday and Thursday because of strained vocal chords, reports AP. Delaware State Fair officials said the show could not be rescheduled before the end of the fair, and full refunds will be given to those who purchased their tickets directly from the Delaware State Fair. The Ohio show was rescheduled for November.

She even had to use a special Dynavox machine on last night’s George Lopez show to conduct the interview: